Question

Question #bda95

Answer 1

Kinetic energy is calculated using `E_k=1/2mv^2`

Explanation:

If m is mass in kg, and v is speed in m/s, then
`E_(k1)=1/2*50*5^2`
`E_(k1)=25*25`
`E_(k1)=625J`

`E_(k2)=1/2*50*10^2`
`E_(k2)=25*100`
`E_(k2)=2500J`